/*
 * TeleStax, Open Source Cloud Communications  Copyright 2012.
 * and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.protocols.ss7.tcap.asn;

import java.io.IOException;

import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.tcap.asn.comp.PAbortCauseType;

/**
 * @author baranowb
 * @author sergey vetyutnev
 *
 */
public class DialogAbortAPDUImpl implements DialogAbortAPDU {

	private AbortSource abortSource;
	private UserInformation userInformation;
	
	

	/**
	 * @return the abortSource
	 */
	public AbortSource getAbortSource() {
		return abortSource;
	}

	/**
	 * @param abortSource the abortSource to set
	 */
	public void setAbortSource(AbortSource abortSource) {
		this.abortSource = abortSource;
	}

	/**
	 * @return the userInformation
	 */
	public UserInformation getUserInformation() {
		return userInformation;
	}

	/**
	 * @param userInformation the userInformation to set
	 */
	public void setUserInformation(UserInformation userInformation) {
		this.userInformation = userInformation;
	}

	/* (non-Javadoc)
	 * @see org.mobicents.protocols.ss7.tcap.asn.DialogAPDU#getType()
	 */
	public DialogAPDUType getType() {
		return DialogAPDUType.Abort;
	}

	/* (non-Javadoc)
	 * @see org.mobicents.protocols.ss7.tcap.asn.DialogAPDU#isUniDirectional()
	 */
	public boolean isUniDirectional() {
		
		return false;
	}

	
	public String toString() {
		return "DialogAbortAPDU[abortSource=" + abortSource + ", userInformation=" + userInformation + "]";
	}

	/* (non-Javadoc)
	 * @see org.mobicents.protocols.ss7.tcap.asn.Encodable#decode(org.mobicents.protocols.asn.AsnInputStream)
	 */
	public void decode(AsnInputStream ais) throws ParseException {
		try {
			AsnInputStream localAis = ais.readSequenceStream();

			int tag = localAis.readTag();
			if (tag != AbortSource._TAG || localAis.getTagClass() != Tag.CLASS_CONTEXT_SPECIFIC)
				throw new ParseException(PAbortCauseType.IncorrectTxPortion, null,
						"Error decoding DialogAbortAPDU.abort-source: bad tag or tagClass, found tag=" + tag + ", tagClass=" + localAis.getTagClass());
			this.abortSource = TcapFactory.createAbortSource(localAis);

			// optional sequence.
			if (localAis.available() == 0)
				return;

			tag = localAis.readTag();
			if (tag != UserInformation._TAG || localAis.getTagClass() != Tag.CLASS_CONTEXT_SPECIFIC)
				throw new ParseException(PAbortCauseType.IncorrectTxPortion, null,
						"Error decoding DialogAbortAPDU.user-information: bad tag or tagClass, found tag=" + tag + ", tagClass=" + localAis.getTagClass());
			this.userInformation = TcapFactory.createUserInformation(localAis);

		} catch (IOException e) {
			throw new ParseException(PAbortCauseType.BadlyFormattedTxPortion, null, "IOException while decoding DialogAbortAPDU: " + e.getMessage(), e);
		} catch (AsnException e) {
			throw new ParseException(PAbortCauseType.BadlyFormattedTxPortion, null, "AsnException while decoding DialogAbortAPDU: " + e.getMessage(), e);
		}

	}

	/* (non-Javadoc)
	 * @see org.mobicents.protocols.ss7.tcap.asn.Encodable#encode(org.mobicents.protocols.asn.AsnOutputStream)
	 */
	public void encode(AsnOutputStream aos) throws EncodeException {
		
		if (abortSource == null)
			throw new EncodeException("Error encoding DialogAbortAPDU: Abort Source Name must not be null");
		
		try {
			
			aos.writeTag(Tag.CLASS_APPLICATION, false, _TAG_ABORT);
			int pos = aos.StartContentDefiniteLength();
			
			this.abortSource.encode(aos);
			
			if (this.userInformation != null)
				this.userInformation.encode(aos);
			
			aos.FinalizeContent(pos);

		} catch (AsnException e) {
			throw new EncodeException("AsnException while encoding DialogAbortAPDU: " + e.getMessage(), e);
		}
	}

}
